From: Adrian Hunter Date: Wed, 1 Apr 2020 10:16:12 +0000 (+0300) Subject: perf evlist: Allow multiple read formats X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=94d3820f2e18d3c88f833baec8d6ad5b3489fa59;p=linux.git perf evlist: Allow multiple read formats Tools find the correct evsel, and therefore read format, using the event ID, so it isn't necessary for all read formats to be the same. In the case of leader-sampling of AUX area events, dummy tracking events will have a different read format, so relax the validation to become a debug message only. Signed-off-by: Adrian Hunter Cc: Andi Kleen Cc: Jiri Olsa Link: http://lore.kernel.org/lkml/20200401101613.6201-16-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 1548237b6558d..82d9f9bb89753 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1131,8 +1131,10 @@ bool perf_evlist__valid_read_format(struct evlist *evlist) u64 sample_type = first->core.attr.sample_type; evlist__for_each_entry(evlist, pos) { - if (read_format != pos->core.attr.read_format) - return false; + if (read_format != pos->core.attr.read_format) { + pr_debug("Read format differs %#" PRIx64 " vs %#" PRIx64 "\n", + read_format, (u64)pos->core.attr.read_format); + } } /* PERF_SAMPLE_READ imples PERF_FORMAT_ID. */